<template>
	<view v-if="goods_info.goods_name" class="goods-detail-container">
	<!-- 轮播图区域 -->
	<swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" :circular="true">
	  <swiper-item v-for="(item, i) in goods_info.pics" :key="i">
	    <image :src="item.pics_big"  @click="preview(i)"></image>
	  </swiper-item>
	</swiper>
  <!-- 商品信息区域 -->
  <view class="goods-info-box">
    <!-- 商品价格 -->
    <view class="price">￥{{goods_info.goods_price}}</view>
    <!-- 信息主体区域 -->
    <view class="goods-info-body">
      <!-- 商品名称 -->
      <view class="goods-name">{{goods_info.goods_name}}</view>
      <!-- 收藏 -->
      <view class="favi">
        <uni-icons type="star" size="18" color="gray"></uni-icons>
        <text>收藏</text>
      </view>
    </view>
    <!-- 运费 -->
    <view class="yf">快递：免运费 </view>
  </view>
  <!-- 商品详情信息 -->
  <rich-text :nodes="goods_info.goods_introduce"></rich-text>
<!-- 商品导航组件 -->
<view class="goods_nav">
  <!-- fill 控制右侧按钮的样式 -->
  <!-- options 左侧按钮的配置项 -->
  <!-- buttonGroup 右侧按钮的配置项 -->
  <!-- click 左侧按钮的点击事件处理函数 -->
  <!-- buttonClick 右侧按钮的点击事件处理函数 -->
  <uni-goods-nav :fill="true" :options="options" :buttonGroup="buttonGroup" @click="onClick" @buttonClick="buttonClick" />
</view>
	</view>
</template>

<script>
// 从 vuex 中按需导出 mapState 辅助方法
import { mapState, mapMutations,mapGetters } from 'vuex'
 
	export default {
    computed:{
      ...mapState('m_cart',[]),
      ...mapGetters('m_cart',['total'])
    },
    watch:{
     //  total(newVal){
     //  const findResult = this.options.find(x=>x.text === '购物车')
     // if(findResult) {
     //   findResult.info = newVal
     // }
     //  }
     // 一加载就调用
     total:{
       handler(newVal){
          const findResult = this.options.find(x=>x.text === '购物车')
         if(findResult) {
           findResult.info = newVal
         }
       },
            immediate:true
     }

    },
		data() {
			return {
				goods_info:{},
          // 左侧按钮组的配置对象
            options: [{
              icon: 'shop',
              text: '店铺',
              infoBackgroundColor:'#007aff',
              infoColor:"red"
            }, {
              icon: 'cart',
              text: '购物车',
              info: 0
            }],
            // 右侧按钮组的配置对象
            buttonGroup: [{
                text: '加入购物车',
                backgroundColor: '#ff0000',
                color: '#fff'
              },
              {
                text: '立即购买',
                backgroundColor: '#ffa200',
                color: '#fff'
              }
            ]
			};
		},
    onLoad(options) {
      // console.log(options)
      const goods_id = options.goods_id
      this.getGoodsDetail(goods_id)
    },
    methods:{
      ...mapMutations('m_cart',['addToCart']),
     async getGoodsDetail(goods_id){
      const {data:res} = await uni.$http.get('/api/public/v1/goods/detail',{goods_id})
      if(res.meta.status !== 200) return uni.$showMsg()
      // 使用字符串的replace()方法，为img标签添加行内的style样式，从而解决底部空白间隙的问题 g全局的
     res.message.goods_introduce= res.message.goods_introduce.replace(/<img /g, '<img style="display:block;" ').replace(/webp/g, 'jpg')
      // 为data中的数据赋值
      this.goods_info = res.message
      },
      preview(i){
        uni.previewImage({
          // 预览时，默认显示图片的索引
          current:i,
          // 所有图片url地址的数组
          urls:this.goods_info.pics.map(x=> x.pics_big)
        })
      },
      onClick(e) {
        console.log(e)
        if (e.content.text === '购物车') {
          // 切换到购物车页面
          uni.switchTab({
            url: '/pages/Cart/Cart'
          })
        }
      },
      buttonClick(e){
        console.log(e)
        if(e.content.text === '加入购物车'){
          const goods={
            goods_id:this.goods_info.goods_id,
            goods_name:this.goods_info.goods_name,
            goods_price:this.goods_info.goods_price,
            goods_count:1,
            goods_small_logo:this.goods_info.goods_small_logo,
            goods_state:true
          }
          this.addToCart(goods)
        }
      },
    }
	}
</script>

<style lang="scss">
swiper {
  height: 750rpx;

  image {
    width: 100%;
    height: 100%;
  }
}
// 商品信息区域的样式
.goods-info-box {
  padding: 10px;
  padding-right: 0;

  .price {
    color: #c00000;
    font-size: 18px;
    margin: 10px 0;
  }

  .goods-info-body {
    display: flex;
    justify-content: space-between;

    .goods-name {
      font-size: 13px;
      padding-right: 10px;
    }
    // 收藏区域
    .favi {
      width: 120px;
      font-size: 12px;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      border-left: 1px solid #efefef;
      color: gray;
    }
  }

  // 运费
  .yf {
    margin: 10px 0;
    font-size: 12px;
    color: gray;
  }
}


.goods-detail-container {
  // 给页面外层的容器，添加 50px 的内padding，
  // 防止页面内容被底部的商品导航组件遮盖
  padding-bottom: 50px;
}

.goods_nav {
  // 为商品导航组件添加固定定位
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
}
</style>
